Treatment of zinc residues.



A. JONES. TREATMENT 0F ZINC RESIDUES APPLICATION FILED JULY 5, 1911.

Patented Sept. 29, 1914.

INVENTOR ATTORNEYS WITNESSES lilv ancnreennaonns; ernanrnnsvmlnenhancers, Assistme, "ro Anrrssvrnru zinc ccrrranir,.or new Youn; N. ,Yaa consumieron' or YRK.

' renal-msn'r or monasteries.'

arancio...

"specialistica @treuer-s Patent. p Patented Sept. 29, 1914.

amil-:summed it`1y15,fia11 .serial no. essere rma@emendamenti Beyiaknown thatfLs'AncHIBArD oNits,l-`a citizen of theellnted' States,residing at. Bartlesville, county 'pfof Washington, State 'of klahoma,hayejinyented .certain new .and useful improvements inthe Treatment ofZinc Residues; endl do hereby` declare the fllowinfg to. be a' 'lf-ull,clear, and exact descriptionv of the inventionysuch as will enableothers'skilled in lthe art to which it y appertains to make and use thesame.

My invention relates to certain newA and ,useful improvements inthetreatment of, yzinc retorty residues, for the purpose ot bringin theminto such a condition that they.l wf lbe more readily salable by reasonci thepractical elimination of the carbon andgzinc contained in them,and so thatthe freight rates for their transportation shall be lessenedon account of the lessened weight and the concentration of the' productincident to the lpractice of the 1nvent1on.

vllhel elimination of the carbon is of especial importance where theyare to -be subsequently smelted in the reverbatory furnnace. Moreover,the treatment to which the residues are subjected ives a product that ispractically devoid oi fines, the granular #residue beine'sss'interedinto -a body which may be bro en "into relatively large lumps ofcoherent material well suited for 'charging into the blast furnace. r

In' the accompanying dirawing,`l`igure TL represents atop plantas@ of anarrangement ci fines suitable :tor putting my 1nvention'intopracticepvFig. 2 represents a sectional elevationy onthe line 2-2 ofFig. y1, and with addition' 'of the pile of residues under` treatment;-Figx, represents a detail sectionl oil'the line'--B of Fig. 1.

Similar vlettersfof reference indicate simi,

. lar parts throughout the several'views.

Referring to the drawing, A' indicates a longitudinal trench made in theground alon the surface thereof and covered over by 're-tiles b, setclose together except where the trench is intersected by the cross duesQB. At these places of intersection the iire-tiles b are spaced apart(asshovvn:A in lig. 3) so. that vthe longitudinal trench flue Acommunicates freelywith the cross liues. The dre-tiles restuponthe -sidewalls c which line the sides `oillthev trench flue throughout. v

The (gross lues'B arehofllow as shown.

A underA thepressure require Their-upper surfaces consist of fire brickId set close together, but'their sides consist of re-briclr`espaced'almrt so as to leave series' of openings f on both sides ofeach crossflue. -At one end, the longitudinal flue A 'ls connected toasuitable source of air blast under a pressurey of say l ounce tothefoot with relation'to the pile of residue D. A slide or registerhgoverns the volume of the air supplied to `the pile. A suitable sourceof air blast may'be any ordinary fan blower, or thelike, of appropriatepower to deliver to the supply the necessar volume of air The mode ofoperation isas follows: The zinc residues to be treated are piledup, asindicated in Fig. 2, in such manner as to cover the space-.occupied bythe seriesl ot' cross flues. Inasmuch as the residuesusually carry ashigh as from 30% to 40% of carbon, it is not necessary, unless in eX-ceptional cases, to add any further fuel thereto except, perhaps,immediately adjoining the cross flues for the purpose of more readilyinitiating the ignition of the tained in the mass. A large proportionof.-

the zinc thus volatihzed is, however,` again caught or entrapped in theouter crust of the pile as zinc oxid, and, at the completion of theoperation, this crust may be broken ofi and the zinc contained in it canthen be recovered by treating the crust in the usualzinc retorts, orotherwise. At the completion of the operation, the pile will constitutea sintered mass which wlll contain whatever metal values, such as gold,silver,

copper,vl lead and the like,` may be present therein and which can'readily be broken up into large lumps vsuitable forwithstanding theburden olf the blast`furnace charge.' The pile, after this treatment,.will-berpnactically free of carbonA and zinc, the outer crust which, ashas been indicated, is to be removed and utilizedfor its zinc content.`

So far as I am aware it is broadly new to concentrate zinc retortresidues by combustion of their carbon content and by t-hev simultaneousvolatilization of the contained zinc and under conditions to cause theconcentrated mass to sinter, and I desire it to be understood,therefore, that I .intend to cover the operation generically whether thecombustion takes lace within an open pile, or whether theplle isinclosed within coniining walls, as, for instance, within a suitablekiln or the like.

What I claim is:

l. The method of treating zinc retort residues `which consists inconcentrating them by combustion of their carbon content andsimultaneously volatilizing the contained zinc, and catching theproducts of volatilization of the zinc in the outer layers of the pile;substantially as described.

except in 2. The method of treating zinc retort residues which consistsin concentrating them by the combustion of their carbon fcontentr andsimultaneously volatilizing the contained zinc, and catching theproducts of volatilization of the zinc in the cuter lay- 3o ers of thepile, the operation being conducted under conditions to cause theconcentrated mass to sinter; substantially as described.

3. The method of treating zinc retort residues, which consists inarranging them in a pile in the open air, concentrating them bycombustion of their carbon content and simultaneously volatilizing thecontained zinc, the operation being conducted under conditions to causethe concentrated mass to sinter; substantially as described.

In testimony whereof I atiix my signature, in the presence of twowitnesses.

ARCHIBALD JONES. Witnesses JAS. A. VEASEY, LLOYD A. RoWLAND.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of .'Eatents,

` Washington, D. C."

